Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 288, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 8, 2001, 10:13 PM CDT for Clearwater County, Mahnomen County, Minnesota. It was in force for 47 min. 1 report came from inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.
The facts
- Issued
- Aug 8, 2001, 10:13 PM CDT (03:13 UTC)
- Expired
- Aug 8, 2001, 11:00 PM CDT
- In force
- 47 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Clearwater County, MN, Mahnomen County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 145 km from the middle of the area, began a volume at 03:15 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 8, 10:25 PM CDT | Thunderstorm Wind | Clearbrook, MN | Trees were blown down. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 8, 6:00 PM CDT | Tornado Watch | SPC | 5 hr |
| Aug 8, 9:45 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
International Fa, MN (KINL), launched 00:00Z, 3.2 hours before the alert went out and 186 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1405 J/kg
- Mixed-layer CIN
- -81 J/kg
- Mixed-layer LCL
- 1530 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- -17 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 3.8
The text
As transmitted, in the capitals the NWS used until 2016.
653 WUUS53 KFGF 090316 SVRFAR MNC029-087-090400- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 1013 PM CDT WED AUG 8 2001 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CLEARWATER COUNTY IN NORTHWEST MINNESOTA AND MAHNOMEN COUNTY IN NORTHWEST MINNESOTA. * UNTIL 1100 PM CDT. * AT 1010 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE LEADING EDGE OF SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM BAGLEY TO MAHNOMEN...MOVEMENT WAS TO THE EAST AT 30 MPH. * SEVERE THUNDERSTORMS WILL CONTINUE NEAR... MAHKONCE AT 1015 PM... BAGLEY AT 1020 PM... LOWER RICE LAKE AT 1025 PM AND ZERKEL AT 1040 PM. HIGH WINDS AND LARGE HAIL WILL CONTINUE TO REMAIN LIKELY IN THE WARNED COUNTIES UNTIL 11 PM. WINDS IN EXCESS OF 70 MPH WILL CONTINUE BE LIKELY. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM WEDNESDAY EVENING FOR NORTHWEST MINNESOTA AND EASTERN NORTH DAKOTA. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM THURSDAY MORNING FOR NORTHWESTERN MINNESOTA AND SOUTHEAST NORTH DAKOTA. LAT...LON 4801 9527 4724 9579 4719 9540 4778 9524 $$ DTR/06 NNNN
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 8, 9:11 PM CDT, 1 hour 2 minutes earlier.
Area forecast discussion, Aug 8, 9:11 PM CDT, 1 hour 2 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 911 PM CDT WED AUG 8 2001 ...DISCUSSION DELAYED DUE TO SEVERE WEATHER... ...MAIN FORECAST CHALLENGE THIS PACKAGE IS SVR CONVECTION WITH FROPA... .CURRENT OBSERVATIONAL OVERVIEW...INTENSE SVR TSTMS HAVE MOVED THROUGH THE GRAND FORKS METRO AREA. WIND GUSTS TO 101 MPH WERE RECORDED WITH THE WEATHER OFFICE HERE. BROKEN LINE OF SVR CELLS ARE ASSOCIATED WITH COLD FRONT MOVING THROUGH THE AREA. .SHORT TERM...WILL MAKE SHORT TERM ADJUSTMENTS TO ZONES TO ACCOUNT FOR CURRENT TSTM ACTIVITY. ZONES WILL AGAIN BE UPDATED WHEN WATCH STATUS CHANGES. .FGF...TORNADO WATCH 664 UNTIL 11 PM (DUE TO BE REVISED BY 10 PM) BRAMER
In the hours before
Local storm report, Aug 8, 7:22 PM CDT, 2 hours 51 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
722 PM CDT WED AUG 08 2001
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0245 PM 6 NW PONSFORD MN 60 MPH TSTM GUST
08/08/01 BECKER
0339 PM AKELEY MN 62 MPH TSTM GUST
08/08/01 HUBBARD MEASURED MN DOT
ROADSIDE SITE
0340 PM PARK RAPIDS MN WIND DAMAGE
08/08/01 HUBBARD NUMEROUS TREES DOWN
0600 PM 2 SW MADDOCK ND 1 INCH HAIL
08/08/01 BENSON
0620 PM 4 SW ESMOND ND 1 INCH HAIL
08/08/01 BENSON
0620 PM 9 NW MADDOCK ND .88 INCH HAIL
08/08/01 BENSON 4 INCH DIAMETER TREE
BRANCHES ALSO DOWN
0623 PM 5 NE MADDOCK ND .75 INCH HAIL
08/08/01 BENSON 4 INCH DIAMETER TREE
BRANCHES ALSO DOWN
0640 PM 4 NW OBERON ND WIND DAMAGE
08/08/01 BENSON 2 TREES BLOWN DOWN
NNNNThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 7:29 PM CDT | Severe Thunderstorm Warning | FGF | Marshall | 46 min |
| Aug 8, 8:18 PM CDT | Severe Thunderstorm Warning | FGF | Kittson, Marshall, Pennington, Polk, Roseau | 57 min |
| Aug 8, 8:18 PM CDT | Severe Thunderstorm Warning | FGF | Red Lake | 57 min |
| Aug 8, 8:47 PM CDT | Flash Flood Warning | FGF | Polk | 6 hr |
| Aug 8, 9:03 PM CDT | Severe Thunderstorm Warning | FGF | Norman | 42 min |
| Aug 8, 9:10 PM CDT | Severe Thunderstorm Warning | FGF | Clearwater, Mahnomen, Polk | 65 min |
| Aug 8, 9:10 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Marshall, Pennington, Red Lake | 65 min |
| Aug 8, 9:18 PM CDT | Severe Thunderstorm Warning | FGF | Lake of the Woods | 42 min |
| Aug 8, 9:26 PM CDT | Severe Thunderstorm Warning | FGF | Clay | 64 min |
| Aug 8, 9:40 PM CDT | Flash Flood Warning | FGF | Norman | 6 hr |
| Aug 8, 9:46 PM CDT | Severe Thunderstorm Warning | FGF | Wilkin | 44 min |
| Aug 8, 9:47 PM CDT | Tornado Warning | FGF | Clearwater, Polk | 28 min |
| Aug 8, 10:00 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Beltrami, Hubbard | 60 min |
| Aug 8, 10:37 PM CDT | Severe Thunderstorm Warning | FGF | Otter Tail, Wadena | 53 min |
| Aug 8, 11:00 PM CDT | Severe Thunderstorm Warning | FGF | Hubbard | 30 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2001Every severe thunderstorm warning in 2001
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.